I'm afraid I'm unable to reproduce this problem with the IceGrid demos Do you remember the steps necessary to reproduce this problem? If you can still reproduce this, the best would be to attach to the IceGrid node process with the debugger and get the stack traces of each thread. This should tell us why the node hangs on shutdown.

I have taken over Calebs position, and the issue is still present in both Ice 3.3.0 and 3.3.1. I have been trying to prepare for daylight savings time, and to check our software, I have been moving the system clock backwards and forwards a hour at a time. When moving the system clock ahead a hour it does not have a problem; however, when I move it back, the IceGridRegistry looses connection with the node after about 1 minute. I tried to get a trace of the IceGridNode, but when I restart it, it stops and restarts just fine. Also, when it is restarted, IceGridRegistry sees the node again.